This inventor holds 3 USPTO granted patents. Top assignees: Mitsubishi Chemical Corporation, Mitsubishi Electric Corporation, Mitsubishi Kasei Corporation. Active years: 1994-2025.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Kei Ishihara. Retrieved from https://idiyas.com/inventor/kei-ishihara-sta7xmiu
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
% Patents Active = 66.7
Average Co-Inventor Count = 1.4
ph-index = 2
Forward Citations = 24(Granted Patents)
Company Filing History:
2 out of 2,426 Mitsubishi Chemical Corporation
1 out of 16,618 
Mitsubishi Electric Corporation
1 out of 499 Mitsubishi Kasei Corporation
where one patent can have more than one assignee
Years Active: 1994-2025
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3 patents (USPTO):Explore Patents
Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
IDiyas Innovation Intelligence. (2026). Inventor Profile: Kei Ishihara. Retrieved from https://idiyas.com/inventor/kei-ishihara-sta7xmiu
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]